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A reliability testing system for a servo tool holder and a testing method using the system

A test system and servo tool post technology, applied in general control systems, control/adjustment systems, instruments, etc., can solve the problems of easy loss of precision, increase of research costs, and influence of research efficiency, so as to achieve true and reliable reliability values ​​and improve Acquisition speed of faults and scientific effects of test methods

Active Publication Date: 2016-08-31
通用技术集团沈阳机床有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reliability of CNC lathe depends largely on the servo tool holder system, which has frequent failures and high hazards
Moreover, since the servo tool holder carries the tool for cutting, the precision is easily lost in the cutting state
The reliability test of the servo tool post of the CNC lathe in China started relatively late. At present, the reliability test of the servo tool post is mainly carried out on the machine tool and can only be carried out with continuous dry running test. This is different from the situation of the tool post in service. The large difference causes many faults of the tool post to fail to be triggered, which not only increases the production cost, but also increases the research cost, affects the research efficiency, and cannot grasp the decline law of the accuracy of the servo tool post

Method used

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  • A reliability testing system for a servo tool holder and a testing method using the system
  • A reliability testing system for a servo tool holder and a testing method using the system
  • A reliability testing system for a servo tool holder and a testing method using the system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 A reliability test system for servo tool post

[0033] Such as Figure 1-3 As shown, a servo tool rest reliability testing system includes a test bench body 1, a tested tool rest 3, an electro-hydraulic loading device 4, and a hydraulic drive system 6. Preferably, the test bench body 1 is a gray cast iron structure. Wherein the tool rest 3 under test is placed on the test bench body 1 through the tool rest support mechanism 2, and a backing plate 10 is provided between the tool rest 3 under test and the tool rest support mechanism 2, and the number or thickness of the backing plate 10 can be adjusted, Adjust the height of the tool rest 3 under test. The tool rest 3 has a cutter head 16 and a motor placed inside the tool rest 3 to drive the rotation of the cutter head 16. The simulated tool holder 11 is installed on the cutter head 16. 16 are evenly distributed with 12 connection positions for simulating the tool bar 11, the electro-hydraulic loading device...

Embodiment 2

[0037] Embodiment 2 A method of testing using a servo tool holder reliability testing system

[0038] The specific steps are:

[0039] 1) Adjust the position and height of the tool holder 3 under test, and place the simulated tool holder 11 on the cutter head 16;

[0040] 2) Carry out a 72-hour continuous dry run test on the tool holder 3 under test, stop the machine once every 24 hours, and test the indexing accuracy of the tool holder 3 under test;

[0041] 3) Control the motor of the tool holder 3 under test, so that the simulated tool bar 11 remains on the position to be tested;

[0042] 4) Adjust the position and angle of the electro-hydraulic loading device 4, so that the loading rod 19 acts on the simulated tool bar 11;

[0043] 5) Control the magnitude of the force applied by the electro-hydraulic loading device 4 to the simulated cutter bar 11 through the hydraulic drive system 6;

[0044]6) Carry out a 24h radial loading test on the tool holder 3 under test, each ...

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Abstract

The invention discloses a servo tool rest reliability testing system and a testing method using the system. The testing system includes a test bench body, a tested tool rest, an electro-hydraulic loading device, a hydraulic drive system, and the tested knife The frame is placed on the test bench body through the tool holder support mechanism. The tool holder under test has a cutter head and a motor placed inside the tool holder to drive the rotation of the cutter head. The simulated tool holder is installed on the cutter head. The electro-hydraulic loading device can The adjustable bracket is set on the base, and the base is fixed on the test bench body. The electro-hydraulic loading device includes a fixed plate placed on the adjustable bracket, and a hydraulic cylinder fixed on the fixed plate through the cage. One end of the hydraulic cylinder passes through the pipeline. It is connected with the hydraulic drive system, and the other end is connected with a pressure sensor and connected with the loading rod through an elastic mechanism. The system and method realize the reliability test and the precision decline test of the tool holder, expose the early failure of the tool holder and grasp the law of its precision decline.

Description

technical field [0001] The invention relates to the field of servo tool rest testing, in particular to a servo tool rest reliability testing system and a testing method using the system. Background technique [0002] The servo tool holder is one of the most important functional parts of the CNC lathe. The reliability of CNC lathe depends largely on the servo tool post system, which has frequent failures and high hazards. Moreover, since the servo tool holder carries the tool for cutting, the precision is easily lost in the cutting state. The reliability test of the servo tool post of the CNC lathe in China started relatively late. At present, the reliability test of the servo tool post is mainly carried out on the machine tool and can only be carried out with continuous dry running test. This is different from the situation of the tool post in service. The large difference leads to many faults of the tool post not being able to be triggered, which not only increases the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/4065
Inventor 李焱吴玉亮刘阔孙名佳谭智朱铁军
Owner 通用技术集团沈阳机床有限责任公司
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